The customer who has placed the most orders.

Problem

Given a list of customer names and their corresponding orders, write a SQL query to find the customer who has placed the most orders.
Input:
customer_name | order_id
--------------+-----------
John Doe      | 1
John Doe      | 2
John Doe      | 3
Jane Doe      | 4
 Output:
John Doe

Solution

This solution is in SQL. Our A.I. can create solutions in multiple languages.

sarastevens

SELECT customer_name, COUNT(order_id) AS order_count
FROM orders
GROUP BY customer_name
ORDER BY order_count DESC
LIMIT 1;

/*

The above query will return the customer with the most orders.

The query first groups the orders by customer name, then counts the number of orders for each customer.

The query then orders the results by the number of orders in descending order.

Finally, the query limits the results to the first row, which will be the customer with the most orders.

*/